So I uploaded a picture with my character, named Tenbi. I tagged it with Character:Tenbi

I just now uploaded a picture I drew myself, and tagged it with artist:Tenbi

however, that changed the tags on the other post from chracter: to artist:

so i went and edited it, to character:tenbi

So things should be fine..right?

except...on my picture, it changed my artist tag to a character tag :/

they either all tag with character: or all tag with artist:

Idk how to fix this

Use tenbi_(artist) for your art, and tenbi_(character) for art depicting your character. Those are site-recognized suffixes, they'll auto-enter the appropriate category.